Home / 130,140.74-179,524.77-79,169.06

Finding the Fourth Proportional to 130,140.74, 179,524.77 and 79,169.06

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Solution

The fourth proportional to 130,140.74, 179,524.77 and 79,169.06 is: 109,211.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,140.74 : 179,524.77 = 79,169.06 : x
  2. Step 2: Convert to fraction form
    130,140.74/179,524.77 = 79,169.06/x
  3. Step 3: Cross multiply
    130,140.74x = 179,524.77 × 79,169.06
  4. Step 4: Simplify right side
    130,140.74x = 14,212,807,287.62
  5. Step 5: Solve for x
    x = 14,212,807,287.62/130,140.74
  6. Step 6: Final answer
    x = 109,211.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.